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Related Concept Videos

Labeling DNA Probes03:31

Labeling DNA Probes

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DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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Related Experiment Video

Updated: Jul 5, 2025

Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection
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Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection

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DNA and Nanomaterials: A Functional Combination for DNA Sensing.

Mohzibudin Z Quazi1, Jang Hyeon Choi1, Minchul Kim1

  • 1Department of Chemistry and The Natural Science Research Institute, Myongji University, Myongji-ro, Yongin, Gyeonggi-do 17058, Republic of Korea.

ACS Applied Bio Materials
|January 25, 2024
PubMed
Summary
This summary is machine-generated.

DNA-nanomaterial biosensors offer precise detection, overcoming limitations of traditional methods. These advanced diagnostic tools leverage DNA

Keywords:
DNA nanotechnologyDNA probesDNA sensingbiosensorsnanomaterials

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Area of Science:

  • Biotechnology
  • Nanotechnology
  • Biosensing

Background:

  • Global diagnostic challenges, exacerbated by pandemics, highlight the need for precise detection of microorganisms and viral diseases.
  • Traditional diagnostic strategies face limitations including narrow detection ranges, poor biodegradability, short half-lives, and environmental sensitivity.
  • Deoxyribonucleic acid (DNA) offers a unique, stable structure for precise identification through base pairing, making it ideal for diagnostic assays.

Purpose of the Study:

  • To review recent advancements in DNA-nanomaterial-based biosensors for improved disease diagnosis.
  • To explore the mechanisms, in vivo, and in situ applications of these novel biosensors.
  • To highlight methodologies utilizing DNA's properties with nanomaterials for enhanced DNA sensing.

Main Methods:

  • Integration of DNA/nucleic acids with functional nanomaterials and inorganic nanoparticles to create composite nanomaterials.
  • Exploitation of the synergistic physicochemical properties of DNA and nanomaterials for biosensor development.
  • Review of recent scientific literature focusing on DNA-nanomaterial interactions and biosensor performance.

Main Results:

  • DNA-nanomaterial biosensors demonstrate enhanced properties, overcoming limitations of conventional diagnostic approaches.
  • These biosensors exhibit improved target detection range, biodegradability, half-life, and stability in various microenvironments.
  • Nucleic acids' high signal conduction abilities contribute significantly to the sensitivity and efficacy of these biosensing platforms.

Conclusions:

  • DNA-nanomaterial-based biosensors represent a significant advancement in diagnostic technology, offering superior precision and reliability.
  • Further research into DNA utilization and interfacial properties of nanomaterials will continue to refine these biosensing systems.
  • Addressing current limitations and exploring future directions will pave the way for broader in vivo and in situ applications.